Question

如何添加计时器以在应用程序打开时更改应用程序的背景 ....这是一个更改背景和图像视图的代码，但不会自动更改....如何执行此操作以使此框架刷新????

 @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    mMainView = inflater.inflate(R.layout.fragment_weather, container, false);

    changebackground = (RelativeLayout)mMainView.findViewById(R.id.weatherbackground);
    celestials=(ImageView)mMainView.findViewById(R.id.celestial);
    temperature = (TextView)mMainView.findViewById(R.id.temperature);

    Calendar cal = Calendar.getInstance();
    cal.setTimeInMillis(System.currentTimeMillis());

    cal.set(Calendar.HOUR_OF_DAY, 6);
    cal.set(Calendar.MINUTE, 00);
    cal.set(Calendar.SECOND, 0);

    long morning_start = cal.getTimeInMillis();

    cal.set(Calendar.HOUR_OF_DAY, 18);
    cal.set(Calendar.MINUTE, 30);
    cal.set(Calendar.SECOND, 0);

    long morning_end = cal.getTimeInMillis();
    long now = System.currentTimeMillis();

    if(now > morning_start && now < morning_end)
    {
        changebackground.setBackgroundResource(R.drawable.day);
        celestials.setImageResource(R.drawable.sun);
    }
    else
    {
        changebackground.setBackgroundResource(R.drawable.night);
        celestials.setImageResource(R.drawable.moon);
    }
    return mMainView;
}

Answer 1

您可以通过主活动中的定义处理程序来执行此操作，该处理程序将在特定时间触发操作，例如

import jenkins.model.Jenkins
Jenkins.instance.computers.each() { c ->
    if(c instanceof hudson.slaves.SlaveComputer) {
        // <Find out agent protocol of c>
    };
}

另请在onCreate

中写下以下一行

Handler mHandler = new Handler();
Runnable mRunnableUpdatePro = new Runnable() {
        @Override
        public void run() {
            mHandler.removeCallbacks(mRunnableUpdatePro);
            mHandler.postDelayed(mRunnableUpdatePro, TIME_TO_UPDATE_BACKGROUND);
//            updateYourPicAndTheameHere();
      }
    };

用于更改应用背景的计时器

1 个答案: